Lock.



H. K-LASK. I

LOCK.

APPLICATION FILED SEPT. 2, I916. W

1,211,177; Patented Jan.2,19 17.

fly! 2 SHEETS-SHEET l.

4 fi m ,HERMHNN KLasK '44 III I T 4745 w 4 I W.

a. KLASK.

.LOCK. APPLICATION HLED SEPT. 2, 1916.

1,21 1,177. Patented an. 2,1917.

2 SHEETS-SHEET 2.

HERMANN KLASK; or BA'rEsBimG, scorn CAROLINA.

' LOCK.

Specification of Letters Patent.

Application filed September 2, 1916. Serial No. 118,248.

To all whom it may concern: Be it known that I, HERMANN KLAsK, a citizen of the United States, residing at Batesburg, in the county of Lexington and State of South Carolina, have invented certain new and useful Improvements in Locks, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to an improved lock and has for its primary'object to provide a lock of very simple construction but which is designed to be burglar-proof and cannot be picked oropened with false keys.

It is another and more particular object of the invention to provide a rectilinearly movable locking bolt, and angularly shiftable tumbler plates arranged upon opposite sides of said bolt to cooperatively engage locking studs carried by the bolt, whereby the latter is locked against shifting movement. I

It is also another object of the invention to provide an operating key of peculiar construction to simultaneously engage and move, the tumblers to their released positions, and

means on the locking bolt. engageable by a projection of the key to shift said bolt.

It is a further general object of my invention to improve the construction of locks of the above type so that the same may be easily and quickly operated and the lock mechanism consisting of comparatively few simply constructed elements which may be manufactured'at relatively small cost.

With the above and other objects in view, my invention consists in the novel features of construction, combination and arrangement of parts to be hereinafter -more fully described, claimed and illustrated in the ac-' companying drawings, in which,

Figure 1 is a side elevation illustrating one manner of using my improved lock; Fig. 2 is a vertical section through the car wall showing the locking device in elevation arranged therein; Fig. 3 is an enlarged elevation of the lock with the face plate removed; Fig. 4 is a transverse section taken on the line -l4 of Fig. 3; Fig. 5 is a. section taken on the line 5-5 of Fig. 4; Fig. 6 is a detail perspective view of the locking bolt; Figs. 7 and '8 are similar views of the tumbler plates; and Fig. 9 is a detail perspective view of the locking key.

In the accompanying drawings I have shown my improved look as applied to a car of a coil spring door latch mechanism, but it is, of course, to be understood that the improved lock construction which constitutes the subjectmatter of this application is also applicable to various other uses, and may be employed upon gates, house doors, safes, cabinets, and in like instances where a burglar-proof lock may be desirable.

Referring now particularly to Figs. 1 and 2, 5 designates the side wall of a car upon which a sliding door 6 is mounted. This door isprovided in its inner edge with spaced latch receiving recesses or sockets 7. Adjacent to the vertical edge of the door opening, a vertical bar 8 is secured to the car wall, and in this bar the spaced, obliquely extending openings 9 are formed. A latch plate 10 is fulcrumed intermediate of its ends, as at 11, in each of these openings, and the ends of said plates which are opposed to the door are formed with upwardly bev" eled lugs 12 for engagement with the keeper Patented Jan. 2, 1917.

plate 13 fixed to the edge of the car door and having slots or openings coinciding with the recesses 7 in said door. The other ends of the latch plates 10 are pivotally connected to a vertical bar 14 for unitary pivotal move ment.

Upon the side wall of the car, adjacent to the lower end of the vertical bar 8, the lock case 15 is suitably mounted, said case having a face plate 16 extending at one of its ends beyond the case body to be secured to the bar 8, as indicated at 17.

The opposed walls of the lock case 15 are a slotted to looselyreceive the longitudinally movable locking bolt 18, one end of which is offset, as at 19, in the particular use to which I have shown the invention applied for the purpose of connecting the lower end 20 thereto, the upper end of said spring being suitably attached to the uppermost latch plate 10. Upon one side of the lock bolt 18, the plate 21 is suitably secured, said plate being provided in one of its longitudinal edges with a series of spaced, V-shaped teeth 22, the points of which are spaced from the contiguouslongitudinal edge of the locking bolt 18. Pins or studs 23 are fixed in the plate 21 at a point in spaced relation to the notches or recesses formed by the spaced teeth 22. Four of these pins are preferably provided. A

series of three pins 24 are also fixed in the set with respect to the pins 23 or disposed out of alinement therewith longitudinally of the locking bolt. The opposed walls of the lock case are suitably notched or recessed at the opposite edges of the slots or openings through which the latch bolt extends, as indicated at 25, to permit of the passage of the pins or studs 23 and 24; therethrough.

Upon each side of the locking bolt, a rectangular tumbler plate 26 and 27 respectively, is arranged within the lock case. Each of these tumbler plates is provided with a longitudinally extending slot 28 and 29 respectively, said slots also extending through the angularly offset end portions 30 and 31 of said plates. To each end of each of the tumbler plates, adjacent one of its longitudinal edges, one end of a coil spring 32 and 33 respectively, is attached, and the said longitudinal edges of the tumbler plates between these springs are concavely curved, as at 3% and 35, the curved edge of the plate 27 being deeper or more pronounced than the curved edge of the plate 28.- i

A series of spaced notches or recesses 36 are formed in the plate 26 at each edge of the slot 28, said notches being arranged in confronting relation, and notches 37 are similarly provided along the edges of the slot 29 in the thmbler plate 27 Preferably, there are three notches in each series in the plate 26 and only two notches in each series in the plate 27. It will be manifest, however, as the description proceeds, that there may be a greater or less number of such notches provided as desired. The notches 36 and 37 in the respective plates along one edge of the slots 28 and 29, have no function in the operation of the device, but are simply provided for the purpose of deception so that one attempting to make a duplicate key would be frustrated in his purpose.

In the base wall of the lock case 15, a pin or Paul] is fixed, said post projecting through the keyhole opening 39 in the front plate 16. The key generally indicated at 40, is clearly shown in Fig. 4: of the drawings.

This key has a tubular shank alto receive the pin or post 38. A key bit 42 projects latl'fllly from the end of the shank ll and has a rounded or convex end face 43. At the inner side of the bit a2, a semi-circular rib or finger 44: projects beyond the rounded face 43 of said hit. A relatively short lug 45 also projects laterally fromthe key shank in spaced relation to the bit 42, thereby providing a recess 46 between said lugs. The end of this lug 4E5 isalso of rounded or convex forn'i, as shown at 4'7.

The parts are assembled within the lock case in the manner shown in Figs. 3 and 4, the locking bolt extending through the case with the plate 21 opposed to the base Wall of the case and two pins 23engaged in the notches in one edge of the tumbler plate 27. The three pins 24 projecting through the other side of the locking bolt are engaged in the notches 36 in one edge of the plate 26. locking engagement with the pins or studs by the springs 32 and 33 which are suitably attached at one of their ends to the pins in the corners of the lock case which socure the cover plate 16 in place.

When it is desired to shift the latch bolt, the key is inserted upon the pin or post 38 through the key hole slot 39 and then turned so that the end of the shorter lug will bear against the curved edge 34: of the tumbler plate 26 and the bit 42 will bear against the curved edge 35 of the tumbler plate 27. The finger 44 on the latter key bit projects between the tumbler plate 27 and the opposed face of the locking bolt 18 in position to engage one of the teeth 22 on the plate 21, the edgeportion of the locking bolt being receivpd in the recess 46. The pressure of the lugs 42 and 45 against the respective tumbler plates 26 and 27 shifts said plates laterally against the action of the springs 32 and 33 so as to disengage the tumbler plates from the pins 23 and 24:

The tumbler plates are held in and position said pins within the slots 28 and 29 of the respcctive plates. It is to be particularly noted that the notches in these tumbler plates are of relatively different depths and that a different extent of move ment of each of the plates is required in order to release the same from engagement M with the locking pins. The continued turning movement of the key causes the finger 44 thereon to engage one of the teeth 22 of the plate 21 and shift the locking bolt longitudinally until the pins come into position opposite the next notch in the tumbler plates when the springs 32 and 33 will immediately act to return the plates into looking engagement with said pins' Another 'turn of the key will effect a second movement of the locking bolt and such movements may be repeated to the extentv of the number of locking pins provided.

In the illustrated application of the invention, it will be understood that the key is turned in a direction to move the plate downwardly through the lock case in order to expand the spring 20 and simultaneously move'the several latch plates 10 to a horizontal position and engage the lugs 12 in the recesses 7 in the door and. behind the upper edges of'the slots in the keeper plate .13. Thus, the sliding car door will be securely held in its closed position. To release the same, the key is rotated within the lock case in a relatively opposite direction so as to shift the locking bolt upwardly, whereby the spring will contract and the offset end 19 of the locking bolt engaging thelowermost latch plate 10, as clearly,

shown in Fig. 2, will cause a pivotal movement of the latch plates and disengage the same from the keeper plate on the door, the lugs 12 on the latch plates moving entirely within the bar 8.

From the foregoing description, taken in connection with the accompanying drawings, the construction, manner of operation and several advantages of my invention will be clearly and fully understood. Of course, in the use of the lock upon the ordinary house door or the door of a safe or cabinet, the lock will be otherwise mounted than that above described and the end of the locking .bolt may be suitably formed to cooperate with any special type of keeper employed. It will be readily seen that by providing the duplicate sets of notches on the opposite sides of the slots in the keeper plate, it would be practically impossible for one to make a duplicatekey for the purpose of operating thelock, as. the key lugs must be of predetermined relative lengths in order to properly move the tumbler plates, and if these lugs are too short they,

will not be effective to disengage one series of notches in the tumbler plates fromthe pins 23 and 24, or if too long, they would move the tumbler plates so asto dispose the pins within the other series of notches in said plates. In addition, the space between the lugs 42 and 45 must; be such as to receive the edge portion of the locking bolt andthe finger 44 must be of the requisite length and shape so that after the tumblers have been moved to their released positions said finger will properly cooperate With the teeth 22 to shift the bolt. It will thus be seen that I have produced a lock which is at the same time of exceedingly simple construction. The lock case itself will, of course, be so mounted and secured that it cannot be bodily removed from the part to which it is attached. The several elements employed. are positive and reliable in their action and are not liable to become easily 1 disarran'ged.

While I have shown and described the preferred construction and arrangement of the several parts of the device, it is to be understood that the same are susceptible of considerable modification and I, therefore, reserve the privilege of adopting all such legitimate changes as may be fairly e1nbodied within the spirit and scope of the invention as claimed.

Having thus fully described my invention, what I desire to claim and secure by Letters Patent is 1. In a look, a case, a locking bolt shiftable through said case, key engaging means on one side of the locking bolt, tumbler members arranged upon the relatively opposite sides of the locking bolt and movable in a openings 9 in the vertical plane at right angles thereto, individual means carried by the bolt to independently co-act with the respective tumbler members and lock the bolt against shifting movement, and an operating key provided with means to move the tumbler members and disengage the same from the locking means" on the bolt and also having apart to subsequently engage the means on the side of the lockingbolt and shift said bolt.

2. In a look, a case, a locking boltIshiftthe bolt to independently co-act with the re-' spectiye tumbler members and lock the bolt against shifting movement, and an operating key provided with means to move the tumbler members and disengage thesame from the locking means on the bolt. and also having a part to co-act with said toothed plate and subsequently shift the bolt.

3. In a lock, a case, a longitudinally shift-. able locking bolt mounted in the case, spring-held tumbler plates arranged on opposite sides of the bolt and movable in a plane at right angles to the movement of the bolt, each of said plates having a longitudinal slot and said slots being disposed in ofi'set relation, a series-of pins projecting from each side of the locking bolt and dis-- posed along different longitudinal lines for engagement in the respective slots, each tum- .bler plate being also provided with spaced notches along one edge of the slot therein, the said series of notches being of relatively different depths to receive the respective se-- ries of pins on the bolt, an operating key having lugs of relatively different lengths to engage the corresponding edges of the respective tumbler plates and shift the same to disengage the pins from the notches in the respective tumbler plates, one of said lugs being provided with a projecting finger, and additional means on the bolt for engagement by said finger to longitudinally shift the bolt.

4. In a look, a longitudinally shiftable locking bolt, spring-held tumbler plates arranged upon opposite sides of the locking bolt and movable in a plane at right angles to the movement of the bolt, each of said plates having a longitudinal slot therein and a series of notches along each edge of the slot, the notches along corresponding edges the bolt is' held against shifting moveof said slots being of relatively difierent ment, a toothed plate fixed upon one side of engagement with said toothed plate to shift "101 the locking bolt, an 'opei'eting key provided the locking bolt. I I V with spaced lugs between Which one edge of In testimony whereof I hereunto affix my the bolft is 1received in the turning movesignature in the presence of two witnesses. ment 0 the iey said 111 s co-actin with the respective tumbler p1ats to shift the same HERMANN KLASK end position the pins on the bolt in the slots WVitnesses:

of the respective plates, and a projecting M. C. LYDDANE,

finger. formed upon one of the key lugs for V. J. DoWRICK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Eatents,

- Washington, D. G. 

